package com.itheima.service.impl;

import com.alibaba.dubbo.config.annotation.Service;
import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.itheima.dao.PermissionDao;
import com.itheima.dao.RoleDao;
import com.itheima.dao.UserDao;
import com.itheima.entity.PageResult;
import com.itheima.entity.QueryPageBean;
import com.itheima.pojo.CheckItem;
import com.itheima.pojo.Permission;
import com.itheima.pojo.Role;
import com.itheima.pojo.User;
import com.itheima.service.UserService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.transaction.annotation.Transactional;

import java.util.List;
import java.util.Set;

@Service(interfaceClass = UserService.class)
@Transactional
public class UserServiceImpl implements UserService {
    @Autowired
    private UserDao userDao;
    @Autowired
    private RoleDao roleDao;
    @Autowired
    private PermissionDao permissionDao;

    //根据用户名查询数据库获取用户信息和关联的角色信息,同时需要查询角色关联的权限信息
    @Override
    public User findByUsername(String username) {
        User user = userDao.findByUsername(username);   //查询用户基本信息
        if (user == null){
            return null;
        }

        Integer userId = user.getId();
        //根据用户ID查询对应的角色
        Set<Role> roles = roleDao.findByUserId(userId);
        //遍历角色
        for (Role role : roles) {
            Integer roleId = role.getId();
            //根据角色ID查询关联的权限
            Set<Permission> permissions = permissionDao.findByRoleId(roleId);
            role.setPermissions(permissions);  //让角色关联权限
        }

        user.setRoles(roles);  //让用户关联角色

        return user;
    }

    //检查项的分页查询
    @Override
    public PageResult pageQuery(QueryPageBean queryPageBean) {
        Integer currentPage = queryPageBean.getCurrentPage();
        Integer pageSize = queryPageBean.getPageSize();
        String queryString = queryPageBean.getQueryString();  //过滤查询的条件

        PageHelper.startPage(currentPage,pageSize);

        Page<User> page = userDao.selectByCondition(queryString);

        long total = page.getTotal();
        List<User> rows = page.getResult();
        return new PageResult(total,rows);
    }
}
